The body of Sen. Mark Udall's brother Randy, 61, has been discovered in the Wyoming mountains after he went missing while hiking on his own. Udall's poles were still in his hand when he was found dead, likely of a medical condition, says his sister. He was at an altitude of 10,700 feet. "Randy left this Earth doing what he loved most: hiking in his most favorite mountain range in the world," the family says in a statement. Indeed, he'd been hiking the Wind River Range for more than three decades, the Denver Post notes. Authorities plan an autopsy.